US2869725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick drain device
Assignee: FE Myers and Bro Co
•
Filing: 1956-03-26
•
Granted: 1959-01-20
•
Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 William A Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:44
CPC Classifications
F; F16; F16T; F16T1/00; C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US251897A
Cited
US2259809A
Cited
GB368098A
Cited
US2607728A
Cited
US2545789A
Cited
US2564922A
Cited
US2718897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |